This template should be called by passing a variable to it for the closest monarch of the House of Windsor. For example, {{House of Windsor|george6}}. This calls only the relevant part of the template, as well as getting around the fair use violation that would occur if the arms images were directly on this template.
Variables
george5 - for George V and his descendants edward8 - for Edward VIII george6 - for George VI and his descendants elizabeth2 - for Elizabeth II and her descendants